203012110323013 has 2 divisors, whose sum is σ = 203012110323014. Its totient is φ = 203012110323012.

The previous prime is 203012110322971. The next prime is 203012110323031. The reversal of 203012110323013 is 310323011210302.

Together with next prime (203012110323031) it forms an Ormiston pair, because they use the same digits, order apart.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 174069840763809 + 28942269559204 = 13193553^2 + 5379802^2 .

It is a cyclic number.

It is not a de Polignac number, because 203012110323013 - 2³⁷ = 202874671369541 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (203012110326013) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 101506055161506 + 101506055161507.

It is an arithmetic number, because the mean of its divisors is an integer number (101506055161507).

Almost surely, 2^{203012110323013} is an apocalyptic number.

It is an amenable number.

203012110323013 is a deficient number, since it is larger than the sum of its proper divisors (1).

203012110323013 is an equidigital number, since it uses as much as digits as its factorization.

203012110323013 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 648, while the sum is 22.

Adding to 203012110323013 its reverse (310323011210302), we get a palindrome (513335121533315).

The spelling of 203012110323013 in words is "two hundred three trillion, twelve billion, one hundred ten million, three hundred twenty-three thousand, thirteen".